CN208472971U - A kind of steel bar girder edges of boards portion and connection joints of steel structure structure - Google Patents
A kind of steel bar girder edges of boards portion and connection joints of steel structure structure Download PDFInfo
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- CN208472971U CN208472971U CN201820852679.0U CN201820852679U CN208472971U CN 208472971 U CN208472971 U CN 208472971U CN 201820852679 U CN201820852679 U CN 201820852679U CN 208472971 U CN208472971 U CN 208472971U
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Abstract
The utility model relates to steel building construction applications, specifically, it is related to a kind of steel bar girder edges of boards portion and connection joints of steel structure structure, it includes longitudinally disposed steel bar girder plate and longitudinally disposed steel structure girder, the floor support plate side with steel bar girder is detachably connected, the other side is arranged at intervals with supporting element, the supporting element stretches out the floor support plate；The steel structure girder side is equipped with steel bar girder plate, is banded with distributing reinforcement on the steel bar girder, and the distributing reinforcement end is located above the steel structure girder, the floor support plate upper surface and the steel bar girder be overlapped on steel structure girder to pour face height suitable.The handling and assembly of the utility model steel bar girder plate are all more convenient simple, the appearance for reducing spillage or steel bar girder plate dislocation gap is mutually supported between adjacent steel bar girder plate by supporting element, floor support plate detachably reuses after concreting solidification, and floor face is relatively more flat can directly to carry out powdering handling.
Description
Technical field
The utility model relates to steel building construction applications, specifically, being related to a kind of steel bar girder edges of boards portion and steel
Structure connecting joint structure.
Background technique
Horizontal structure form work engineering in China's building trade generallys use at present sets up bent-frame bracing, additionally arranges flitch and glue
Plywood or template.Its technological principle provides support by setting bent-frame bracing system for floor support plate, meets construction stage bearing capacity
And deformation requirements.Since that process is tedious is complicated for bent-frame bracing system, basement process need to be carried out, scaffold is set up, installation template, ties up
Wire-tie, concrete casting, maintenance, demoulding will occupy a large amount of time, occupy the duration, and the management of leasing of scaffold takes
With height, there is also the danger of high-altitude construction.
In recent years, the application with steel construction in building field is goed deep into, and applies the floor support plate between steel structure girder
It is laid with and production efficiency is still seriously affected using traditional approach.Chinese Patent Application No.: 2010106235093, patent name:
Steelframe truss floor support plate construction method, disclose by by the galvanized sheet of zinc-plated bed die floor support plate and steel bar truss welding in steel knot
The mode of structure beam solves the problems, such as bent-frame bracing system, reduces template, scaffolding work, reduces steel bar girder binding
Amount.But zinc-plated bed die steel bar girder is at high cost, it is secondary to whitewash relatively difficult, and the segmentum intercalaris of zinc-plated template and steel structure girder
Point structure processing is more difficult.
Chinese Patent Application No.: 2013102995081, patent name: self-bearing type bar frame gang form and its construction
Method discloses the bar frame of a kind of multiple rows of longitudinal reinforcement truss and multiple rows of transversely distributed steelbar composition, bar frame and can
Disassembly template is implemented in combination with few Construction of Supporting scheme of the template in concreting, scaffold when reducing horizontal structure construction
It uses.Allow template that utilization is repeated, reduce cost, facilitate secondary powdering, but is applicable only on frame beam structure,
Rarely has the application on steel structure girder, and bar frame gang form handling is relatively difficult, and the bar frame of large area
Gang form installs node complexity, and bonding strength is low, and load-bearing capacity is weaker.
Summary of the invention
The content of the utility model is to provide a kind of steel bar girder edges of boards portion and connection joints of steel structure structure, can be real
Existing steel bar girder and reinforcing steel bar frame are set a roof beam in place the construction efficiency of higher bonding strength and more efficient, while reducing supporting element significantly
Use.
A kind of steel bar girder edges of boards portion according to the present utility model and connection joints of steel structure structure, including longitudinally disposed steel
Muscle truss plate and longitudinally disposed steel structure girder, floor support plate side is detachably connected with steel bar girder, the other side is arranged at intervals with
Supporting element, the supporting element stretch out the floor support plate；
The steel structure girder side is equipped with steel bar girder plate, and distributing reinforcement, the distribution are banded on the steel bar girder
Muscle end is located above the steel structure girder, and the floor support plate upper surface is overlapped on pouring for steel structure girder with the steel bar girder
Face height is suitable.
The method that the detachable steel bar girder plate of the utility model uses small area on-site consolidation, so that steel bar girder plate is hung
Fortune and assembly are all more convenient simple, are mutually supported between adjacent steel bar girder plate by supporting element and reduce spillage or reinforcing bar purlin
The appearance in frame plate dislocation gap, the floor support plate upper surface and steel structure girder pour face height and quite make steel structure girder and floor
Plate good integrity, anti-knock shock resistance be good, good waterproof performance, and floor support plate detachably reuses after concreting solidification, floor
Face is relatively more flat can directly to carry out powdering handling.
It further, further include dowel, the dowel one end is overlapped with the steel bar girder, the other end is located at
Above steel structure girder.The utility model dowel one end connection steel bar girder other end is located above steel structure girder, pours coagulation
After soil, floor plates and steel structure girder coupling part tension shear resistance are stronger, reduce bar material dosage.
Further, the steel bar girder includes wind up reinforcing bar, lower edge reinforcing bar and web member reinforcing bar, and the dowel includes
Upper dowel and lower dowel, the upper dowel and lower dowel respectively with reinforcing bar and the lower edge bar splicing of winding up.This is practical
The novel institute upper dowel and lower dowel increase and decrease respectively with reinforcing bar and the lower edge bar splicing formation space net structure of winding up
The bonding strength of edge node structure.
Further, the upper dowel and the prominent steel bar girder part of lower dowel bind or are welded with perpendicular
End distributing reinforcement.The utility model dowel and end distributing reinforcement intersecting vertical bind to form space net structure, further increase
The structural strength of floor plates and steel structure girder coupling part.
Further, the distance of the upper dowel is located at floor support plate side one end to steel structure girder axis is greater than
300mm, the distance that the lower dowel is located at one end to the steel structure girder axis of floor support plate side are greater than 200mm.This is practical
The novel muscle lap of splice that is vertically connected with further ensures that the floor plates of moulding by casting have preferable connect by force with steel structure girder
Degree.
Further, including cheek board, the cheek board is arranged in the steel structure girder other side that is set to opposite with steel bar girder plate
Including level board and vertical plate, the level board is welded on steel structure girder, and the vertical plate is connect with dowel end.This reality
It is connect with the novel cheek board with dowel end, so that dowel has supporting role to cheek board, increases cheek board
Stability just has good obstruction to the concrete poured.
Further, the gap of the floor support plate and the steel structure girder stitching portion is equipped with sealing plate, and the sealing plate prevents
The concrete leakage poured.Described in the utility model sealing plate can be quickly laid with, effectively prevent floor plates and steel structure girder it
Between gap generate spillage phenomenon.
Further, peg is welded on the upside of the steel structure girder.The utility model is arranged in steel bar girder end to be supported
The bonding strength of muscle and weld stud increase and decrease floor plates and steel structure girder.
Further, the prominent steel structure girder of the horizontal plate portions forms overhanging.The utility model passes through cheek board
The setting of the protrusion steel structure girder side of level board can form floor plates overhanging in a certain range.
Detailed description of the invention
The schematic perspective view of Fig. 1 detachable reinforcing steel truss plate；
Fig. 2 is present invention looks up structural representation when steel bar girder plate splices；
Fig. 3 is steel bar girder plate end and steel structure girder connecting joint structure schematic diagram；
Fig. 4 is steel bar girder edges of boards portion and steel structure girder connecting joint structure schematic diagram.
In figure: 1- steel bar girder, 11- lower edge reinforcing bar, 12- wind up reinforcing bar, 13- web member reinforcing bar, attached on 15- additional muscle 151-
Dowel under additional muscle, 16- dowel, the upper dowel of 161-, 162- under reinforcement, 152-, 2- floor support plate, 20- steel bar girder plate,
3- supporting element, 4- connector, 41- card slot, the end 51- steel structure girder, 52- steel structure girder, 6- anchor bolt, 7- cheek board, 71- are perpendicular
To plate, 72- level board, 9- distributing reinforcement, 17- supporting rib, the end 18- distributing reinforcement.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, from beginning extremely
Same or similar label indicates same or similar element or element with the same or similar functions eventually.Below with reference to
It is illustrative when the embodiment of attached drawing description, it is only used for explaining the utility model, and the limit to the utility model cannot be construed to
System.
With reference to the accompanying drawings of the specification and specific embodiment, invention is described in detail.
A kind of detachable steel bar girder plate 20 as shown in Figure 1 and Figure 2 comprising steel bar girder 1, connector 4, floor support plate
2 and supporting element 3.The steel bar girder 1 includes one winding up reinforcing bar 11 and two lower edge reinforcing bars 12, and two lower edge reinforcing bars 12 pass through web member steel
Muscle 13 is welded to connect with the reinforcing bar 11 that winds up respectively.The two lower edges reinforcing bar 12 is opposite to be connected with connector 4.The connector 4 wraps
The card slot 41 of the Feed-through 4 of side opening is included, 4 lower end of connector is equipped with threaded hole.Connector 4 is pairs of to be connected under two
On string reinforcing bar 12, each pair of connector 4 longitudinal arrangement on steel bar girder 1.
The span of the plate of detachable reinforcing steel truss shown in Fig. 1 20 can be according to requiring to design, generally 1~3m, and width is
Two Pin steel bar girders 2, steel bar girder 2 or a Pin, three Pin or more Pin, Fig. 1 are brief description in some embodiments
The connection relationship of steel bar girder 1 and floor support plate 2.
As shown in Fig. 2, the splicing relationship between steel bar girder plate 20.The floor support plate 2 is connected far from 1 side of steel bar girder
There is supporting element 3, the supporting element 3 is spaced laterally apart on 2 length direction of floor support plate, and the supporting element 3 alternately stretches out
2 left and right sides of floor support plate.One supporting element, 3 right end stretches out 2 the right of floor support plate, 2 left side of left indent floor support plate, adjacent supporting piece 3
Then on the contrary, 2 left side of floor support plate is stretched out on 2 the right of right indent floor support plate, left end.The floor support plate 2 is equipped with connecting hole, the support
Part 3 is equipped with fixation hole, and bolt front end passes sequentially through the fixation hole, the connecting hole is connect with the threaded hole of connector 4, so that
Supporting element 3 and floor support plate 2 are connect with steel bar girder 1.Preferably, each steel bar girder board width be set as 400mm~
800mm is equipped with 1 to 5 placing of reinforcement truss.The floor face has several unit steel bar girder plates 20 assembled, according to splicing
When, the width of the steel bar girder plate 20 finally spliced on side according to the assembled width design of real surplus, can for by a Pin or
The steel bar girder plate 20 that the more Pin steel bar girders 2 of person form.
According to construction requirement, according to the processing of design length, accurate blanking and branch is welded in factory's steel bar girder plate 20
Support muscle 17；The floor support plate 2 and 1 assembly connection of steel bar girder of width will be designed, floor support plate 2 and the assembly of steel bar girder 1 can be
Batch production assembly, can also avoid the haulagman of reusable floor support plate in the construction site assembly connection of specific regions
Make.The steel bar girder plate assembled avoids construction site cutting quantity, and when construction can accomplish accurate contraposition.
As shown in figure 3, steel bar girder 1 is longitudinally disposed, end is welded with supporting rib 17, and the supporting rib 17 is in inverted " t "
Shape, its end 12 end of reinforcing bar of winding up respectively with two lower edge reinforcing bars 11 of distribution triangular in shape and one are welded to connect, the support
Muscle 17 is welded on the upper surface of the steel structure girder 5.
The laterally setting of end steel structure girder 51, one side is equipped with steel bar girder plate 20, the other side is equipped with cheek board
7, the part of the prominent floor support plate 2 of the steel bar girder 1 is welded on the supporting rib 17 and institute of the upper surface of described end steel structure girder 51
The overlap joint of end steel structure girder 51 is stated, on 2 upper surface of floor support plate and the institute of steel bar girder 1 overlapped the end steel structure girder 51
The face height of face casting concrete is suitable.Distributing reinforcement 9, the distributing reinforcement 9 and steel bar girder 1 are banded on the steel bar girder 1
Vertically.The distributing reinforcement 9 with reinforcing bar 11 and the binding of lower edge reinforcing bar 12 or welding of winding up, forms bilevel space point respectively
Cloth.
1 end of steel bar girder is equipped with additional muscle 15, and the additional muscle 15 is overlapped with distributing reinforcement 9 or steel bar girder 1,
Prominent 1 end of steel bar girder of the additional muscle 15 is located at 51 upside of end steel structure girder.Further, the additional muscle 15 includes
Upper additional muscle 151 and lower additional muscle 152, the upper additional muscle 151 and lower additional muscle 152 are located at upper layer and lower layer distributing reinforcement 9
Two sides and distributing reinforcement 9 bind or be welded to connect, the upper additional muscle 151 is located at one end of floor support plate side to end steel construction
The distance of 51 axis of beam is greater than 300mm, and the lower additional muscle 152 is located at one end of floor support plate side to 51 axis of end steel structure girder
The distance of line is greater than 200mm.It is arranged on steel bar girder 1 perpendicular to the distributing reinforcement 9 and additional muscle 15 of 1 length direction of steel bar girder
11 lower section of string reinforcing bar, need to guarantee thickness of concrete cover.
Further, in some embodiments, the additional muscle 15 is located at the part binding of 51 upside of end steel structure girder
Distributing reinforcement 18 is held, the end distributing reinforcement 18 intersects to form reticular structure with 15 end vertical of additional muscle, so that end steel structure girder
51 pour after floor plates 2 be connected firmly, shock resistance it is strong.
As shown in figure 4, steel structure girder 52 is parallel with the steel bar girder 1, the 20 side edge of steel bar girder plate and steel
Structural beams 52 are parallel and face (the pouring face) height of the faying surface or casting concrete of 2 upper surface of floor support plate and steel structure girder 52
Quite.9 end of distributing reinforcement is the top that face is poured with steel structure girder 52, and 16 one end of dowel and distributing reinforcement are interspersed
52 top of steel structure girder, the dowel 16 bind or are welded on the steel bar girder 1.The dowel 16 includes
Upper dowel 161 and lower dowel 162, the upper dowel 161 and lower dowel 162 respectively with reinforcing bar 11 and the lower edge steel of winding up
Muscle 12 connects, and is located at prominent 20 part of steel bar girder plate and is banded with distributing reinforcement 18.The end distributing reinforcement 18 and 16 end of dowel
Portion's square crossing formed two layers of reticular structure so that steel structure girder 52 pour after floor plates 2 be connected firmly, shock resistance it is strong.
In the side opposite with steel bar girder plate 20 of the end steel structure girder 51 and steel structure girder 52, cheek board 7 is set.
The cheek board 7 includes level board 72 and vertical plate 71, and the level board 72 is welded on the end steel structure girder 51 and steel knot
52 upside of structure beam, the vertical plate 71 are welded to connect with the end of additional muscle 15 and dowel 16 respectively.When design needs, institute
It states 72 a part of level board to be welded on end steel structure girder 51 and steel structure girder 52, the prominent end steel structure girder of a part
51 or/and steel structure girder 52 formed overhanging.
2 end of floor support plate and the end steel structure girder 51 and 2 side portion of floor support plate and steel structure girder 52 splice
When inevitably will appear gap, when the gap between the floor support plate 2 and the end steel structure girder 51 and steel structure girder 52 is larger
When or there may be leakage concrete grout the case where when, on gap be arranged sealing plate 8, the sealing plate 8 by self-tapping screw fastening
On floor support plate 2, or can also spot weld end steel structure girder 51 or/and steel structure girder 52 prevents the concrete poured from letting out
Dew.In the construction of some removable steel bar girder plates, removable steel bar girder plate 20 and end steel structure girder 51 and steel construction
Beam 52 carries out parallel surface laying, and the gap 10~15mm is reserved between floor support plate 2 and steel structure girder 5, and is closed up with sealing plate 8, with
Mortar leakage prevention.
In order to which concrete and end steel structure girder 51 and steel structure girder 52 are connected firmly, in 51 He of end steel structure girder
52 upside weld stud of steel structure girder.
Setting up for steel bar girder plate can be realized by step once:
S1 builds steel structure girder；
S2, handling detachable reinforcing steel truss plate, detachable reinforcing steel truss plate includes detachable floor support plate, and respectively
Steel bar girder and supporting element positioned at floor support plate two sides, the prominent template of the steel bar girder simultaneously weld supporting rib in end；
S3 is laid with detachable reinforcing steel truss plate, is successively laid with from initial position to adjacent direction, the steel bar girder two
Overlapped that supporting rib is welded on the steel structure girder at end, and the supporting element stretches to adjacent detachable template respectively and mutually props up
Support；
S4, weld stud；
S5 is laid with additional muscle, distributing reinforcement and pipeline.
S6 welds cheek board, casting concrete；
S7, after concrete setting meets intensity requirement, form removal, bottom plate mould and supporting element recycling.
Further, the attachment muscle includes upper additional muscle and lower attachment muscle, and the upper additional muscle is located at floor support plate side
The distance of one end to steel structure girder axis is greater than 300mm, and the lower additional muscle is located at one end of floor support plate side to steel structure girder axis
The distance of line is greater than 200mm.
Further, the S4 includes being laid with sealing plate, and the sealing plate blocks the gap between steel structure girder and floor support plate.
Step S2, in handling detachable reinforcing steel truss plate, the peace of preparation, supporting element before needing to carry out lifting
Reference line is marked on dress, steel structure girder, prepares the necessary preparation such as to lift by crane components, take safety measures.
Step S3 is laid with detachable reinforcing steel truss plate, needs to be installed according to layout drawing, impaired detachable reinforcing steel occurs
It needs to correct when truss plate.When being laid with first block of laying detachable reinforcing steel truss plate, alignment fiducials line to install, remaining steel
Muscle truss plate is successively installed, while noticing that plate-laying direction is consistent, keeps close assembled between floor support plate and floor support plate.According to need
It to finish up using non-standard steel bar girder plate, supporting rib and steel structure girder spot welding connection, weld seam will meet design strength, check
Whether there is spillage position and accordingly takes measures.
20 plane of steel bar girder plate and elevation construction sequence: the laying of every floor board is preferably from initial position to a direction
It is laid with, corner parts are finally handled；The steel bar truss floor support plate of corresponding each layer is laid with main structure installation sequence.When across
Degree should add one of temporary support in span centre when being greater than construction stage maximum without support span.
Drawing must be read over before welding edge template construction, made an accurate selection of cheek board model, determined the cheek board lap of splice.Peace
When dress, cheek board is close to steel structure girder face, cheek board bottom and steel structure girder surface every 300mm spacing spot welding 25mm long,
2mm high weld seam.It answers bracing wire to be straightened after cheek board installation, reinforcing bar one end and peg point one end and cheek board is utilized after adjusting suitably
Side mode is fixed in spot welding.
The laying construction of step S6 additional bar engineering and pipeline sequence: the laying of pipeline → setting connects reinforcing bar → setting
Additional bar → setting hole side additional muscle → setting distribution bar.
Due to the influence of steel bar girder, laying the line in floor plates preferably uses the preferable material of flexibility.Due to reinforcing bar
Truss limited separation should avoid more root canal line boundlings pre-buried as far as possible, pipeline a little bit smaller using diameter as far as possible, and dispersion perforation is pre-
It buries.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in also be the utility model method one of embodiment, be actually not limited thereto.So if this field
Those of ordinary skill is enlightened by it, without deviating from the purpose of the present invention, without creatively design with
The similar mode of the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (9)
1. a kind of steel bar girder edges of boards portion and connection joints of steel structure structure, including longitudinally disposed steel bar girder plate (20) and longitudinal direction
The steel structure girder (52) of setting, which is characterized in that floor support plate (2) side and steel bar girder (1) is detachably connected, other side interval
It is provided with supporting element (3), the supporting element (3) stretches out the floor support plate (2)；
Steel structure girder (52) side is equipped with steel bar girder plate (20), is banded with distributing reinforcement on the steel bar girder (1)
(9), distributing reinforcement (9) end is located above the steel structure girder (52), floor support plate (2) upper surface and the reinforcing bar purlin
Frame (1) be overlapped on steel structure girder (52) to pour face height suitable.
2. steel bar girder edges of boards portion and connection joints of steel structure structure according to claim 1, which is characterized in that further include connecting
It connects muscle (16), dowel (16) one end and the steel bar girder (1) overlap joint, the other end are located on steel structure girder (52)
Side.
3. steel bar girder edges of boards portion and connection joints of steel structure structure according to claim 2, which is characterized in that the reinforcing bar
Truss (1) includes wind up reinforcing bar (11), lower edge reinforcing bar (12) and web member reinforcing bar (13), and the dowel (16) includes upper connection
Muscle (161) and lower dowel (162), the upper dowel (161) and lower dowel (162) respectively with the reinforcing bar that winds up (11) and under
String reinforcing bar (12) overlap joint.
4. steel bar girder edges of boards portion and connection joints of steel structure structure according to claim 3, which is characterized in that the upper company
It connects muscle (161) and lower dowel (162) prominent steel bar girder (1) partially binds or be welded with perpendicular end distributing reinforcement
(18).
5. steel bar girder edges of boards portion and connection joints of steel structure structure according to claim 3, which is characterized in that institute on described
The distance for stating one end to steel structure girder (52) axis that dowel (161) is located at floor support plate (2) side is greater than 300mm, the lower institute
The distance for stating one end to steel structure girder (52) axis that dowel (162) is located at floor support plate (2) side is greater than 200mm.
6. steel bar girder edges of boards portion and connection joints of steel structure structure according to claim 1, which is characterized in that including with steel
Muscle truss plate (20) is opposite to be set to steel structure girder (52) other side setting cheek board (7), and the cheek board (7) includes level board
(72) it is welded on steel structure girder (52) with vertical plate (71), the level board (72), the vertical plate (71) and dowel
(16) end connects.
7. steel bar girder edges of boards portion and connection joints of steel structure structure according to claim 1, which is characterized in that hold in the building
The gap of plate (2) and the steel structure girder (52) stitching portion is equipped with sealing plate (8), and the sealing plate (8) prevents the concrete poured
Leakage.
8. steel bar girder edges of boards portion and connection joints of steel structure structure according to claim 1, which is characterized in that the steel knot
Peg (6) are welded on the upside of structure beam (52).
9. any one of -8 steel bar girder edges of boards portions and connection joints of steel structure structure according to claim 1, which is characterized in that
The prominent steel structure girder (52) in level board (72) part forms overhanging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820852679.0U CN208472971U (en) | 2018-06-04 | 2018-06-04 | A kind of steel bar girder edges of boards portion and connection joints of steel structure structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820852679.0U CN208472971U (en) | 2018-06-04 | 2018-06-04 | A kind of steel bar girder edges of boards portion and connection joints of steel structure structure |
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| CN208472971U true CN208472971U (en) | 2019-02-05 |
Family
ID=65215956
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| CN201820852679.0U Expired - Fee Related CN208472971U (en) | 2018-06-04 | 2018-06-04 | A kind of steel bar girder edges of boards portion and connection joints of steel structure structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625489A (en) * | 2018-06-04 | 2018-10-09 | 浙江中益建材科技有限公司 | A kind of steel bar girder edges of boards portion and connection joints of steel structure structure |
| WO2019149009A1 (en) * | 2017-11-29 | 2019-08-08 | 浙江中益建材科技有限公司 | Assembled-type reinforcing bar truss floor deck |
| CN111794501A (en) * | 2020-08-04 | 2020-10-20 | 舜元建设(集团)有限公司 | Pouring method of cast-in-situ cantilever structure formwork system |
-
2018
- 2018-06-04 CN CN201820852679.0U patent/CN208472971U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019149009A1 (en) * | 2017-11-29 | 2019-08-08 | 浙江中益建材科技有限公司 | Assembled-type reinforcing bar truss floor deck |
| CN108625489A (en) * | 2018-06-04 | 2018-10-09 | 浙江中益建材科技有限公司 | A kind of steel bar girder edges of boards portion and connection joints of steel structure structure |
| CN111794501A (en) * | 2020-08-04 | 2020-10-20 | 舜元建设(集团)有限公司 | Pouring method of cast-in-situ cantilever structure formwork system |
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| GR01 | Patent grant | ||
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Granted publication date: 20190205 |